Subtract 81/36 from 42/75
1st number: 42/75, 2nd number: 2 9/36
42/75 - 81/36 is -169/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 75 × 12 = 900,
42/75 = 42 × 12/75 × 12 = 504/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
81/36 = 81 × 25/36 × 25 = 2025/900 - Subtract the two like fractions:
504/900 - 2025/900 = 504 - 2025/900 = -1521/900 - After reducing the fraction, the answer is -169/100
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